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Author Lindner, J. ♦ Lundberg, J. K. ♦ Williams, R. M. ♦ Leone, S. R.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword INSTRUMENTATION, INCLUDING NUCLEAR AND PARTICLE DETECTORS ♦ FOURIER TRANSFORM SPECTROMETERS ♦ SIGNAL-TO-NOISE RATIO ♦ TIME RESOLUTION ♦ LASER SPECTROSCOPY ♦ FLUORESCENCE SPECTROSCOPY ♦ INFRARED SPECTRA ♦ PHOTOCHEMICAL REACTIONS
Abstract The signal-to-noise ratio in a time-resolved Fourier transform (FT) infrared emission experiment is improved by pulse-to-pulse normalization. The signal from the FT spectrometer is normalized by the total infrared fluorescence produced on each laser pulse. A factor of 20 enhancement in signal-to-noise ratio is demonstrated with normalization when the fluctuation of the laser pulse energy is the dominant noise source. Applications are discussed pertaining to cases where other noise sources such as detector and amplifier noise cannot be neglected and when information from the time evolution of the spectrum is required.
ISSN 00346748
Educational Use Research
Learning Resource Type Article
Publisher Date 1995-04-01
Publisher Place United States
Journal Review of Scientific Instruments
Volume Number 66
Issue Number 4


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